I really like the portrait ones. I.e. the Leshrac one and the one Phobos has above me. Those look the best, and would probably serve well as a baseline before adding in the extras such as running or attacking.
Hero: Spiritbreaker and Tinker (Two avatars, If one is allowed then choose spiritbreaker)
Animation: Hero Portrait
Facial Expressions: Normal
Background Color: Blue (same as Tinker's potrait background color)
Other Notes: -